JPH10197392A - Device for inspecting paper container for leakage of contained liquid - Google Patents

Device for inspecting paper container for leakage of contained liquid

Info

Publication number
JPH10197392A
JPH10197392A JP3104097A JP3104097A JPH10197392A JP H10197392 A JPH10197392 A JP H10197392A JP 3104097 A JP3104097 A JP 3104097A JP 3104097 A JP3104097 A JP 3104097A JP H10197392 A JPH10197392 A JP H10197392A
Authority
JP
Japan
Prior art keywords
paper container
containers
signals
displacement
detectors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3104097A
Other languages
Japanese (ja)
Inventor
Hideo Takada
秀夫 高田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP3104097A priority Critical patent/JPH10197392A/en
Publication of JPH10197392A publication Critical patent/JPH10197392A/en
Pending legal-status Critical Current

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  • Examining Or Testing Airtightness (AREA)

Abstract

PROBLEM TO BE SOLVED: To automatically inspect paper containers for leakage caused by pinholes, defective sealing, etc., at a high speed by detecting the external size variation of the containers caused by the difference between internal pressures of the containers after a heat-sterilizing, filler enclosing, and shower-water cooling processes. SOLUTION: Paper containers 10 which contain liquids and are arranged on a conveyance belt 40 are moved at a fixed speed. The sensor sections 21 and 22 of displacement detectors A and B are respectively positioned at a fixed height on both sides of the belt 40 and the surface swelling states of the containers 10 are detected. An amplifier section converts the detected signals of the detectors A and B into displacement signals and sends the signals through a cable as analog voltages. Then defective containers are rejected by computing the detected signals of the detectors A and B and outputting accurate size outputs by eliminating errors resulting from the positional variation, and then, setting thresholds having defined sizes and converting the thresholds into ON and OFF signals.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、一般的な牛乳や、果物
ジュスを紙容器に充填封入する装置で、漏れ検査に関す
るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for filling and enclosing general milk or fruit juice in a paper container, and relates to a leak inspection.

【0002】[0002]

【従来の技術】従来の漏れ検出装置は、金属缶におい
て、打検査法で衝撃を与えて、容器内圧の差による、周
波数変化を読取って検査を行っているが、紙容器は打検
査法では周波数の変化を読取ることが難しくて、応用で
きないため、検査されていない。
2. Description of the Related Art A conventional leak detection device performs an inspection by applying a shock to a metal can by a punching inspection method and reading a frequency change due to a difference in container internal pressure. It has not been tested because it is difficult to read the change in frequency and cannot be applied.

【0003】[0003]

【発明が解決しようとする課題】本発明は、液体を紙容
器に充填封入する技術の進歩により、パックラインの自
動化、高速化は著しく進んできたが、紙容器の漏れ検査
の自動化、高速化が出来ていないため、完成品を多数段
ボール箱に梱包出荷して後、客先に着いてから液漏れが
染み出して全品不良返品となることがあり、取引に支障
を来たすことがあるので、この様なことの起こらない様
に漏の検査を事前に行うことを、目的とします。
SUMMARY OF THE INVENTION In the present invention, although the automation and speeding-up of a pack line have been remarkably progressed due to the advance of technology for filling and enclosing a liquid in a paper container, automation and speeding up of a leak inspection of a paper container have been remarkably advanced. Since many finished products are packed in a cardboard box and shipped after they arrive at the customer, liquid leakage may seep out and all products may be returned defective, which may hinder transactions, The purpose is to conduct a leak inspection in advance so that this does not occur.

【0004】[0004]

【課題を解決するための手段】本発明は、液体を紙容器
に充填封入する自動パックラインにおいて、加温殺菌・
充填封入・シャワー水冷工程の後で、内容液が冷却され
てた所では紙容器内の圧力が負圧になるため、紙容器の
外形が収縮しており、ピンホールや密封不良のため、紙
容器内の圧力が外気圧力と等しい場合と比較すると、内
容液1000ミリリットル入りの標準品で、密封不良品
はある一定の高さ位置で紙容器側面の中心部寸法が、前
後・又は左右両面で約1ミリメートル以上大きくなって
いるので、この差を接触、又は非接触式変位検出器を利
用して、紙容器の自動搬送ベルトの両側面に対面させて
設置して、この差を同時に検出判定して管理敷居値を決
め良否判定をし、判定出力にりよ不良品を搬送ラインよ
り自動的に排出をする。
SUMMARY OF THE INVENTION The present invention relates to an automatic pack line for filling and enclosing a liquid in a paper container.
After the filling / shower water cooling process, where the liquid content is cooled, the pressure inside the paper container becomes negative, and the outer shape of the paper container shrinks. Compared to the case where the pressure inside the container is equal to the outside air pressure, the standard product containing 1000 ml of the liquid content, the poorly sealed product has the center part dimension of the paper container side at a certain height, Since the difference is about 1 mm or more, this difference can be detected and determined simultaneously by using a contact or non-contact type displacement detector to face both sides of the automatic conveyor belt of the paper container. Then, the management threshold value is determined, quality is determined, and defective products are automatically discharged from the transport line based on the determination output.

【0005】[0005]

【作用】この発明の、紙容器の封じ液漏れ検出装置は液
体の自動充填封止装置のライン機構や、速度を大幅に変
更することなく、又紙容器に特別な操作をすることも無
くして、今まで検査のできなかったのが容易に液漏れ検
査ができる。
According to the present invention, the paper container sealing liquid leak detecting device does not require a drastic change in the line mechanism and speed of the automatic liquid filling and sealing device, and does not require any special operation on the paper container. Liquid leak inspection can be easily performed, which could not be performed until now.

【0006】[0006]

【実施例】図1は、本発明の一実施例を示す配置図であ
る。
FIG. 1 is a layout diagram showing an embodiment of the present invention.

【0007】この実施例において、搬送ベルト40の上
に整列して内容液が充填封入された紙容器10が一定速
度で移動している、その両側の一定高さ位置に変位検出
器のセンサー部21・22を配置して紙容器10の表面
の膨らみ具合を検出して、アンプ部24・26で変位信
号に変換して、ケーブル27でアナログ電圧として送り
両検出器の信号を演算して、位置変動による誤差を除
き、正確な寸法出力を出して、決められた寸法の敷居値
を設定して、ON・OFF信号に変え、不良品の排出を
行う。
In this embodiment, a paper container 10 filled with and filled with a content liquid is moving at a constant speed while being aligned on a conveyor belt 40, and a sensor unit of a displacement detector is provided at a constant height position on both sides thereof. 21 and 22 are arranged to detect the degree of swelling of the surface of the paper container 10, converted into displacement signals by the amplifiers 24 and 26, sent as analog voltage by the cable 27, and operated by the signals of both detectors. Exact errors are output except for errors due to position fluctuations, threshold values for the determined dimensions are set, ON / OFF signals are changed, and defective products are discharged.

【0008】図2は、本発明の実施例図1における、紙
容器10に対する、レーザー光学式非接触変位計のセン
サー部を、紙容器10の移動する正面から見た配置を示
す図である。
FIG. 2 is a view showing the arrangement of the sensor unit of the laser optical non-contact displacement meter with respect to the paper container 10 in the embodiment shown in FIG.

【0009】図3は、本発明の実施例図1における、紙
容器10に対する、レーザー光学式非接触変位計のセン
サー部を、紙容器10の移動する上面から見た配置を示
す図である。
FIG. 3 is a view showing the arrangement of the sensor unit of the laser optical non-contact displacement meter with respect to the paper container 10 in FIG. 1 of the embodiment of the present invention, as viewed from the upper surface where the paper container 10 moves.

【0010】図4は、本発明の実施例図1における、紙
容器10に対する、電子式接触変位計のセンサー部を、
紙容器10の移動する正面から見た配置を示す図であ
る。
FIG. 4 shows an embodiment of the present invention. In FIG.
FIG. 3 is a diagram illustrating an arrangement of the paper container viewed from the front where the paper container moves.

【0011】図5は、本発明の実施例図1における、紙
容器10に対する、電子式接触変位計のセンサー部を、
紙容器10の移動する上面から見た配置を示す図であ
る。センサー31・32の接触先端部は、紙容器10の
接触摩擦による誤差が生じない様にベアリングローラー
とし、接触圧力による変化を少なくするため、可能な限
り微小圧力とする。
FIG. 5 shows an embodiment of the present invention. In FIG.
FIG. 3 is a diagram illustrating an arrangement of the paper container viewed from a moving upper surface; The contact tips of the sensors 31 and 32 are formed as bearing rollers so that an error due to the contact friction of the paper container 10 does not occur, and the pressure is made as small as possible in order to reduce the change due to the contact pressure.

【0012】図6は、図2と同じ。FIG. 6 is the same as FIG.

【0013】図7は、本発明の実施例図1における、紙
容器10に対する、レーザー光学式非接触変位計のセン
サー部、図3と同じものを紙容器10、一本に対して3
対として同時に使用場合の、紙容器10の移動する上面
から見た配置を示す図である。振動及び位置ずれ・角度
誤差の影響が少なくすることができる。
FIG. 7 shows a sensor unit of the laser optical non-contact displacement meter for the paper container 10 in FIG. 1 according to the embodiment of the present invention.
FIG. 6 is a diagram illustrating an arrangement viewed from the top surface where the paper container moves when the pair is used simultaneously. The effects of vibration and displacement / angle error can be reduced.

【0014】[0014]

【発明の効果】本発明によれば、装置が小型で検出速度
が早く、既設のベルトラインの騒音による影響を受け
ず、振動の影響を受け難くでき、ラインに組込み充填封
止の不良品が容易にできる。
According to the present invention, the apparatus is small, has a high detection speed, is not affected by the noise of the existing belt line, and is less likely to be affected by vibration. Easy.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施例を示す配置図である。FIG. 1 is a layout diagram showing an embodiment of the present invention.

【図2】上記実施例における光学式変位センサーの設置
説明正面図である。
FIG. 2 is an installation front view of an optical displacement sensor in the embodiment.

【図3】上記実施例における光学式変位センサーの設置
説明上面図である。
FIG. 3 is a top view for explaining installation of an optical displacement sensor in the embodiment.

【図4】上記実施例における接触式変位センサーの設置
説明正面図である。
FIG. 4 is an installation front view of the contact type displacement sensor in the embodiment.

【図5】上記実施例における接触式変位センサーの設置
説明上面図である。
FIG. 5 is a top view for explaining installation of a contact displacement sensor in the embodiment.

【図6】上記実施例における光学式変位センサー3対式
の設置説明正面図である。
FIG. 6 is an installation front view of a three-pair optical displacement sensor in the embodiment.

【図7】上記実施例における光学式変位センサー3対式
の設置説明上面図である。
FIG. 7 is a top view for explaining installation of a three-pair optical displacement sensor in the embodiment.

【符号の説明】[Explanation of symbols]

10…………………紙容器 21・22…………検出器センサー部(非接触型) 23・25…………接続ケーブル 24・26…………アンプ部(非接触型) 27・28…………出力接続ケーブル 31・32…………検出器センサー部(接触型) 40…………………ベルト A−1.2.3……検出器センサー部(非接触型) B−1.2.3……検出器センサー部(非接触型) 10 Paper container 21/22 Detector sensor unit (non-contact type) 23/25 Connection cable 24/26 Amplifier unit (non-contact type) 27 · 28 ····································································· Belt A-1.2.3 ····· Detector sensor section (without contact B-1.2.3 Detector sensor unit (non-contact type)

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 紙容器等に液体を充填封じ込みをした
時、紙容器内圧の差による、外形変化を検出してピンホ
ールや、容器封じ欠陥不良による液漏れを検出する装
置。
1. A device for detecting a change in external shape due to a difference in internal pressure of a paper container when a liquid is filled and sealed in a paper container or the like, and for detecting a pinhole or a liquid leak due to a defective container sealing defect.
【請求項2】 請求項1において、 上記の検出を、レーザー等の光学変位検出器や、電子変
位検出器により、液体パックの実働ライン上にて、接触
又は、非接触で高速度に検出する装置。
2. The method according to claim 1, wherein the detection is performed at a high speed in a contact or non-contact manner on a working line of the liquid pack by an optical displacement detector such as a laser or an electronic displacement detector. apparatus.
【請求項3】 請求項1〜2において、 上記の変位検出器を2式1対として紙容器の同じ高さ位
置で、左右向い合せて設置して演算することにより、紙
容器の位置変動による誤差を取除き検出する装置。
3. The method according to claim 1, wherein the displacement detectors are installed as two sets of one pair at the same height position of the paper container and face-to-face with each other so as to calculate a displacement of the paper container. A device that removes and detects errors.
【請求項4】 請求項3において、 上記の変位検出器を2式1対として容器の同じ高さ位置
で、左右向い合せて紙容器の移動に対し3連同時に設置
して同時に変位演算取込みすることにより、紙容器の移
動・振動よる誤差を取除き検出する装置。
4. The method according to claim 3, wherein the displacement detectors are provided as a pair of two sets at the same height position of the container, and three sets of the displacement detectors are installed at the same time for the movement of the paper container in the left and right direction, and the displacements are simultaneously calculated. This device removes and detects errors due to the movement and vibration of the paper container.
JP3104097A 1997-01-08 1997-01-08 Device for inspecting paper container for leakage of contained liquid Pending JPH10197392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3104097A JPH10197392A (en) 1997-01-08 1997-01-08 Device for inspecting paper container for leakage of contained liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3104097A JPH10197392A (en) 1997-01-08 1997-01-08 Device for inspecting paper container for leakage of contained liquid

Publications (1)

Publication Number Publication Date
JPH10197392A true JPH10197392A (en) 1998-07-31

Family

ID=12320382

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3104097A Pending JPH10197392A (en) 1997-01-08 1997-01-08 Device for inspecting paper container for leakage of contained liquid

Country Status (1)

Country Link
JP (1) JPH10197392A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008151641A (en) * 2006-12-18 2008-07-03 Nihon Tetra Pak Kk Device and method for inspecting packaging container
US11650123B2 (en) 2020-01-24 2023-05-16 Toyota Jidosha Kabushiki Kaisha Case airtightness evaluation method and evaluation device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008151641A (en) * 2006-12-18 2008-07-03 Nihon Tetra Pak Kk Device and method for inspecting packaging container
US11650123B2 (en) 2020-01-24 2023-05-16 Toyota Jidosha Kabushiki Kaisha Case airtightness evaluation method and evaluation device

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